baber/WOPTO huggingface dataset:
Patent GB-179178-A (GB)
Title: Improvements in thermal cut-outs
IPC: H01H71/18
Filed: 1922-04-27
Abstract: 179,178. Cramer, O. P. April 27, 1921, [Convention date]. No Patent granted (Sealing fee not paid). Automatic circuit-breakers.-A thermally-released overload switch comprises several lengths of resistance wire, the cumulative expansion of which serves to release a spring-actuated trip lever and open the circuit. In the form shown in Fig. 2, four wire-lengths 1<a> - - 1<d> are arranged in series on one side of an insulating block and the length 1<d> is connected to a trip lever 4 which, with a spring arm 6 also included in the circuit, is mounted on the other side. Multiplying levers 13, 14, 15 of the ratio 1, 2 are aranged between the lengths so that a cumulative magnification of 15 times the expansion of one length is obtained at the lever 4, which further magnifies the movement three times. The sensitiveness of the device may be adjusted by a screw 11 which varies the length of contact between the arm 6 and the lever 4 and a spring controlled resetting knob 9 increases the speed of the break. A screw 16 adjusts the tension of the wires.
Patent GB-275708-A (GB)
Title: Improvements in and relating to electric contact plugs, couplings, terminals and the like
IPC: H01R13/05
Filed: 1926-05-07
Abstract: 275,708. Chapman, A. E., and Cook, C. R. May 7, 1926. Plug couplings.-In hollow plugs for couplings, valve pins, terminals and the like, of the tyre having segments formed by longitudinal slots a which do not extend to the ends of the plug, the radial flexibility of the segments is increased by formingor cutting transverse slots or grooves a<5> therein. The central hollow a<3> may, as shown in Fig. 6, be produced by the intersection of the longitudinal slots, while the transverse slots may, in section, lie at right angles to the axis of the plug, as shown in Fig. 1, or may be inclined thereto at any desired angle. Specifications 231,280 and 241,794 are referred to.
Patent GB-238301-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B9/10
Filed: 1924-05-15
Abstract: 238,301. Wade, H., (Mercury Mills, Ltd.). May 15, 1924. Knot-tying devices. - Knitting-machines are provided with knot-tying apparatus to enable changes of yarn to be made without stopping. The knotter is of known type and includes a bill hook K, operated by a lever K<1> which also operates clamping jaws K<4>. The lever K<1> is connected by pin-and-slot to an arm K' on a vertical spindle K' at the lower end of which is an arm K" carrying a roller capable of being operated by a cam 20. Normally the roller is held out of action by a sector S<17> which supports a projection K<9> on the spindle K<7>. The sector is slidably and rotatably mounted on a shaft S<11> and is moved to engage any one of the yarn guide fingers such as S<1>, and to release the projection K<9>, by means of a pin S<18> passing through the sector and carried by a disc S<10> which is connected by a rod S<12> to a bell-crank S<13>. The sector is moved axially by means of a sliding rod and by a grooved cam S<23> carried by a bellcrank S<24> connected by a link S<25> to an arm S<26>. The bell-crank S<13>, the arm S<26> and an arm S<32> carrying a dog S<31> are all mounted loosely on a spindle S<14>. The yarn selecting means is operated by means of an eccentric S<33> pivoted to the arm S<32>. The dog S<31> is thus constantly oscillated and when a cam S<28> connected to the arm S<26> and having high and low surfaces engages with it slow surface a pawl S<29> on the ball-crank S<13> the dog S<31> is able to engage the pawl and the eccentric S<33> oscillates the disc S<10>. The bellcrank S<24> is connected to a lever 28 carrying an anti-friction roller bearing on a pattern chain 26 the studs on which determine the amount of axial movement of the sector S<17>. Specification 24290/12, [Class 74 (ii), Knitting &c.], is referred to.
Patent GB-181201-A (GB)
Title: Improvements in collapsible chairs
IPC: A47C4/40
Filed: 1921-04-27
Abstract: 181,201. Hurd, J. D. April 27, 1921, Folding seats; adjustments; bottoms and backs; rests.-To a collapsable deck chair is added a seat-forming framework 11 connected to the front end of the rear leg framework 8 and adapted to be brought into contact with the flexible material 10 of the chair to reshape it into an horizontal seat and vertical back. The seat forming framework has a length of canvas secured to it, and is adapted, when the chair is in the lounge position, to form a leg rest, or to be fastened to the lower surface of the member 8 as shown by broken lines in Fig. 4. Spring clips 14 retain the cross rail 9<a> in the notches 8<a> when the chair is lifted.
Patent GB-725733-A (GB)
Title: Improvements in or relating to circuits for use in automatic telephone systems
IPC: B23D61/02
Filed: 1953-05-01
Abstract: 725,733. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 1, 1953 [May 5, 1952], No. 12133/53. Drawings to Specification. Class 40 (4). The system described is the same as that in Specification 733,577, wherein an intelligence connection is established over discharge tubes pertaining to the calling and called subscriber under the control of a marking circuit (TS), but the claims are directed to the action of an auxiliary tube (B3) on the marking circuit in response to the first dialled impulse.
Patent GB-633145-A (GB)
Title: Automatic vapor operated spray generator
IPC: A01M13/00
Filed: 1947-05-06
Abstract: 633,145. Spray-producers; fluid-actuated valves. TRIGGS, W. W. (Homestead Valve Manufacturing Co.). May 6, 1947, No. 12247. [Classes 69 (iii) and 135] A spray mixture of liquid and the vapour of a liquid is produced under pressure in a heating zone, a part of the vapour is separated from the mixture, and the energy from the separated vapour is used to continuously replenish the heating zone as the spray mixture is discharged from the heating zone. A preferred apparatus comprises a spray-generator 3 with a burner 6 and circulating coils 7 connected to a vapour liquid separator column 8, having a water level at 20. Upon the generation of a vapourpressure within the column a mixture of water and steam passes through pipes 46, 47, and valve , 48, to a spray gun 50. Steam under pressure is removed from the column 8 through a pipe 44 and valve 54 to a boiler feed injector 55. The force of the vapour under pressure through injector 55 draws water from a supply tank 2 through a pipe 26 and hose 56 and directs it through a pipe 63 where a portion passes through valve 19 to column 8. The remainder passes through a valve 64 and pipe 65 to a hydraulic injector 66, its passage therethrough draws a chemical solution from a tank 67 and forces it through pipe 71 to the spray gun. If the pressure of the spray mixture in the pipe 47 falls below or rises above pre-determined amounts the valve 76 cuts off the burner fuel supply from a pressure tank 10. An alternative apparatus is described in which the heating device is not required to have a specific level of liquid therein. The valve controlling the supply of oil fuel to the burner has an oil fuel inlet 34, a burner supply pipe 40, and an inlet 74 connected to vapour under pressure. The vapour pressure forces a piston 90 and valve-rod 93 against the action of a spring 101. If the vapour pressure falls below or rises above predetermined values a ball 95 will seat at 96 or 89 respectively and block the oil flow. A gland 102 may be adjusted to vary the actuating pressures.
Patent GB-256337-A (GB)
Title: Improvements in or relating to machines for covering elastic and other cores
IPC: D02G3/36
Filed: 1925-05-12
Abstract: 256,337. Matterson, W. May 12, 1925. Cores, covering by winding.-In a machine for covering elastic or other cores the core a is drawn through a number of flyers each of which winds one or more threads b thereon, the alternate flyers rotating in opposite directions so that the alternate coverings are laid in opposite directions. The flyers in one form comprise a sleeve 4 about which the bobbin 6 is free to rotate and arms 8 carrying guides 9, 10 for the threads extending from a flange 5 at the base of the sleeve; the flyers are driven by belts 18 from pulleys 14, clutches 25 operated simultaneously by a hand-lever 22 being provided for engaging the pulley 14 with continuously rotating shafts 13. To prevent overrunning of the bobbin when the flyer is arrested a spring blade which bears on the bobbin may be mounted on one of the arms 8. In another form of flyer, Fig. 4, the arms 8 and guides 9, 10 carried thereby are mounted independently of the flange 5, and the bobbin 6 rotates with the flyer, a pin 63 projecting upwardly from the flange 5 engaging an aperture in the bobbin. The supply bobbin 29 for the core may be braked by a band 32 which is attached at one end to a pivoted lever 33 and at the other end to the machine frame, or alternatively the core may be led between a pair of rollers one of which is mounted upon a pivoted lever so that the pressure between the rollers may be adjusted. The draw roll 40. which is driven through reduction gearing from one of the shafts 13, is provided with a clutch 43 actuated simultaneously with the clutches 25 by a rod 45 carried upon the hand-lever 22. Reference has been directed by the Comptroller to Specifications 911/90, 8854/02. and 23223/14.
Patent GB-342608-A (GB)
Title: Improvements in apparatus for dispensing constant volumes of liquid
IPC: G01F11/02
Filed: 1930-04-22
Abstract: 342,608. Delivering measured liquid quantities. ZAHN & CO. BAU CHEMISCHER FABRIKEN GES., 8, Darmstaedterstrasse, Berlin, (Assignees of Poncioni, G.; 9a, Via Giordano Bruno, P adova, Italy.) April 22, 1930, No. 12428. Convention date, April 22, 1929. [Class 106 (v).] Moving - chamber apparatus.-A vessel 3 dips into a liquid supply L, is raised by a cord 8 and crank &c. 6, and the required amount delivered into a tilting chute 7 by displacers 4, 41, adjusted by moving the stems 4a. To permit of a fine adjustment one displacer 41 is made much smaller than the other.
Patent GB-789390-A (GB)
Title: Purification of phenothiazine
Inventor: HOARE MICHAEL FREDERICK
IPC: C07D279/18
Filed: 1955-04-29
Abstract: Phenothiazine or alkyl derivatives of phenothiazine, in which the alkyl groups are attached to a benzene ring, and which contain sulphur impurities, are purified by heating a solution of the phenothiazine or alkyl derivative in a liquid terpene.  The terpene may be a mono-terpene, a sesquiterpene or a diterpene and may be a terpene hydrocarbon, aldehyde, ketone or alcohol, e.g. citral, ionones and citronellal.  Dipentene is the preferred terpene.  In an example crude phenothiazine is dissolved in dipentene and the solution is heated; phenothiazine is precipitated and its separation is facilitated by the addition of petroleum ether.ALSO:Purified phenothiazine or its alkyl derivatives, obtained by heating a solution of the crude material in a liquid terpene may be used to impart oxidation-inhibiting properties to lubricants. In the case of mineral oils it is preferred to use the alkyl derivatives since they are more soluble than unsubstituted phenothiazine whereas in synthetic oils, particularly those containing oxygen (e.g. in ester or ether groups), the unsubstituted phenothiazine is satisfactory. The solubility of phenothiazine in mineral oils may be improved by the use of solubilizers such as diesters.  The alkyl derivatives of phenothiazine referred to are those in which the alkyl groups are attached to a benzene ring.
Patent GB-1356195-A (GB)
Title: Triggering device for a silicon controlled rectifier for controlling a capacitor discharge ignition circuit
IPC: F02P3/08
Filed: 1971-04-30
Abstract: 1356195 Ignition systems FABBRICA ITALIANA MAGNETI MARELLI SpA 30 April 1971 [5 June 1970] 12489/71 Heading F1B A triggering device for a silicon controlled rectifier SCR for controlling a capacitor discharge ignition circuit of an internal-combustion engine (not shown) comprises a monostable multi-vibrator MVM adapted for response in use to input pulses produced by operation of a mechanical contact breaker R to provide output pulses for supply to the silicon controlled rectifier, the input of the multi-vibrator being connected to a memory circuit such that in use when the multi-vibrator is operated to produce an output pulse the memory circuit will be conditioned to apply to the multi-vibrator input a bias such as to resist operation of the multivibrator to produce a further output pulse, the memory circuit being such as to remove the bias within a predetermined period to permit the multi-vibrator to respond to the next operation of the contact breaker. The memory circuit comprises a capacitor C3 parallel connected to a resistor R5 so that the capacitor is charged during production of a multi-vibrator output pulse. The multi-vibrator is arranged for energization from a D.C. source through an integrating circuit comprising a series resistor 12 and a parallel capacitor C4. Upon each operation of the breaker contacts, the capacitor will provide the multi-vibrator with a supply voltage sufficient to develop at the catput thereof a control signal capable of triggering the silicon controlled rectifier, while the capacitor will for a predetermined period after the conductive state of the multi-vibrator ceases, supply the multi-vibrator with such a reduced supply voltage that the multi-vibrator output control signal is zero or incapable of triggering the silicon controlled rectifier.
Patent GB-795906-A (GB)
Title: Non-metallic magnetic recording materials and process for producing the same
IPC: G11B5/706
Filed: 1956-04-24
Abstract: 795,906. Magnetic compositions. MEDVEDIEFF, S. April 24, 1956 [April 27, 1955], No. 12562/56. Class 38 (2). A material suitable for use as magnetic recording medium is made by heating at about 1050‹ C. a mixture in molecular proportions of ferric oxide 40-50 per cent, magnesium oxide 10-40 per cent, cobalt oxide 10-40 per cent, zinc oxide 0-15 per cent, quenching the product in water and then grinding to powder. The magnesium oxide is preferably introduced by starting with magnesium carbonate, the preferred starting ratios in gram molecules being 45 Fe 2 0 3 ; 20-25 CoO; 15-30 MgC0 3  and 0-10 ZnO. In one example, suitable weights of the first three materials were ground for fourteen hours with water in a ball-mill, dried, screened, compressed into a cylinder sintered at 1050‹ C. for one hour and fragmented in water. After regrinding, drying and screening, the powder was heated at 250‹ C. for 12 hours in a magnetic field of 2000 oersteds and cooled to room temperature in one hour. Modifications are described in which suitable proportions of these materials and zinc oxide are used.
Patent GB-1021121-A (GB)
Title: Polymerization of n-vinyl lactams
Filed: 1964-03-25
Abstract: N-vinyl lactams are polymerized to give polymers having a Fikentscher K value of 20 to 40 using an azo catalyst and employing a hydroperoxide as a chain transfer agent.  The polymerization is carried out in solution and the solvent is either water or a lower aliphatic alcohol.  The preferred hydroperoxide is hydrogen peroxide.
Patent GB-681158-A (GB)
Title: Improvements in x-ray fluoroscopes for use in dentistry
IPC: A61B6/14
Filed: 1949-05-12
Abstract: 681,158. X-ray apparatus. JONG DE SILVA, S. S. P. DE. April 11, 1950 [May 12, 1949], No. 12673/49. Class 98 (i). In an X-ray fluoroscope of the kind comprising a viewing tube 10 to exclude external light, the forward end of the tube, which is sufficiently small to be inserted in the patient's mouth, being provided with a viewing head 12 comprising an X-ray screen 13 and a reflecting surface 14 inclined to the screen to reflect the image thereon down the axis of the viewing tube, the angle between the screen 13 and the reflecting surface 14 is equal, or substantially equal, to 70 degrees, and the screen 13 is inclined at an angle to the axis of the viewing tube equal, or substantially equal, to 15 degrees, whereby the X-ray screen may be presented squarely to the part of the jaw being examined and an undistorted image obtained. The image is viewed by placing the eye to the other end of tube 10, which may be shaped for the purpose, with the aid of a lens mounted in the tube if desired. The head 12 may be enclosed by a bag of " Cellophane " (Registered Trade Mark) which may be discarded after use, or may have a metal cover with a window transparent to X-rays opposite screen 13. Such a cover is removed and sterilised after use.
Patent GB-1083574-A (GB)
Title: Cabin air conditioning apparatus for aircraft
Inventor: MARKHAM BASIL GERVASE
IPC: B64D13/06
Filed: 1963-03-29
Abstract: 1,083,574. Fluid-pressure servomotor systems. BRISTOL SIDDELEY ENGINES Ltd. March 26, 1964 [March 29, 1963], No. 12673/63. Heading G3P. [Also in Division F4] In an aircraft air conditioning system (see Division F4) recirculated air is passed through a duct 15 by a compressor 18 which is powered by a turbine driven by vitiated air being discharged to atmosphere. At times when the compressor does not receive sufficient power to move air through the duct 15 against cabin pressure, a valve 66 is closed and air is recirculated through a duct 48. Chambers 53 and 55 on either side of a diaphragm 54 are subject to pressures at points 52 and 55a in the ducts 48 and 15 respectively, and when the compressor raises the pressure at 52 above that at 55a the diaphragm moves a valve 56 to the right thus admitting pressurized air from a line 38 to a chamber 62 to commence movement of a piston 64 to open the valve 66 and close a valve 51 in the recirculation duct 48. Closing of the valve 51 further raises the pressure at 52 to increase the rate of closure of the valve 66. The valve 56 may be replaced by a piston type valve, Fig. 3 (not shown).
Patent GB-958577-A (GB)
Title: Improvements in or relating to transmission couplings
Inventor: MAXWELL-HOLROYD LESLIE
IPC: F16D3/68
Filed: 1960-04-09
Abstract: 958,577. Shaft couplings. B.R.D. CO. Ltd. April 25, 1961 [April 9, 1960], No. 12704/60. Heading F2U. A resilient coupling comprises sponge or foam rubber strips 15 interposed between ribs 11 of an inner member 10 and limbs 14 of a star-section tube 13. The inner member 10 is integral with a yoke of a Hooke's joint, and the tube 13 is welded to a hollow transmission shaft 16 having another Hooke's joint at its other end. Bearing strips 20 are provided between the ends of the ribs 11 and the bottom of the limbs.
Patent GB-1104471-A (GB)
Title: Fluorine-containing phosphonitrilic compounds
IPC: C08G79/025
Filed: 1965-03-25
Abstract: Novel asymmetrically substituted polyfluoroalkyl cyclic phosphonitrilates of the formula <FORM:1104471/C2/1> where n is 3 to 7 and R and R1 are radicals of the formula -OCH2(CF2)xY where x is 1 to 20 and Y is hydrogen or fluorine, are prepared by reacting a phosphonitrilic chloride of formula [-N = P(Cl)2-]n with a mixture of alkali metal salts of the formula Y(CF2)xCH2OM, where M is alkali metal, in the presence of an aromatic hydrocarbon, the said mixture of salts comprising the alkali metal salt of at least two polyfluoro alcohols having different carbon chain lengths.  The compounds may also be prepared from the free alcohols if an acid acceptor, preferably an alkali metal hydroxide, is also present.  The products have fire-resistant properties.  The polyfluoro alcohols are prepared by telomerization of tetrafluoroethylene with methanol, and the alkali metal salts are prepared by reacting sodium hydride with the alchols.
Patent GB-335909-A (GB)
Title: Improvements in hinges for spectacles, eyeglasses and the like
IPC: G02C5/22
Filed: 1929-04-24
Abstract: 335,909. Eglinton, W. D. April 24, 1929. Addition to 335,233. Spectacles.-The hinges of spectacle frames constructed as described in the parent Specification are modified so that they have three chiniers in place of the two in the parent Specification. Two of the chiniers 3 are formed at the edges of one fastening plats and the other 4 in the middle of the other fastening plate, fitting the gap in the two chiniers. Similar stop pieces to those described in the parent Specification are provided.
Patent GB-1180835-A (GB)
Title: Intumescent Polyurethane Coating Compositions
IPC: C08G18/76
Filed: 1967-03-17
Abstract: 1,180,835. Polyurethane foams. TAKEDA CHEMICAL INDUSTRIES Ltd. 17 March, 1967 [17 March. 1966], No. 12771/67. Headings C3C and C3R. Polyurethane foams are prepared from a composition which comprises (1) as the first component, a polyurethane prepolymor having 10 to 35 weight per cent of NCO radicals, which is derived by reaction of an #, #<SP>1</SP>-diisocyanate dimethyl benzene and a polyol, and (2) as the second component, a mixture of a polyether polyol or polyester polyol in an amount such as to provide an NCO: OH ratio of approximately one, a catalyst for the NCO-OH reaction, a blowing agent and a foam regulating agent. The polyol used to prepare the first component is preferably a polyether or polyester, although monomeric polyols may be used also. Suitably the polyisocyanate is a mixture of 60 to 90 weight per cent of the 1,3-isomer and 40 to 10 weight per cent of the 1,4-isomer. Preferred catalysts are tertiary amines or organic tin compounds, especially tetra-alkyldistannoxanes. Water or halogenated hydrocarbons may be used as blowing agents and the foam regulating agents is suitably a silicone oil.
Patent GB-370679-A (GB)
Title: Improvements in safety razor
IPC: B26B21/52
Filed: 1931-05-01
Abstract: 370,679. Safety razors. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Durham Duplex Razor Co. ; 511, 5th Avenue, New York, U.S.A.) May 1, 1931, No. 12863. [Class 30.] The blade 1 of a safety razor is clamped flat between a clamping plate 3 and guard plate 2 by longitudinally spaced beaded studs 7 on the clamping plate passing through a medial slot in the blade and apertures 6 in the guard to be engaged by a locking device 4 having registering recesses 5 and mounted for rotational movement only in a facial recess in the guard so as to lock or release the blade with a quarter turn. Pinned to the locking disc 4 is a head 9 and a split cam 8 which cam, on rotation of the disc, resiliently presses against the edge of the medial blade slot to align one cutting edge against corner stops 11 on the guard simultaneously with the clamping action. The head 9 is provided with two threaded handle sockets giving an aligned or a T-position of the handle. The guard carries also blade locating pins fitting flush in apertures in the clamping plate.
Patent GB-1249584-A (GB)
Title: Paper feed mechanisms
Inventor: JONES HAROLD GEORGE
IPC: G03G15/00
Filed: 1969-03-12
Abstract: 1,249,584. Feeding webs and sheets. H. G. JONES. 3 Feb., 1970 [12 March, 1969], No. 13101/69. Heading B8R. A paper feeding mechanism, e.g. for an electrostatic copying machine, is arranged to impart temporary longitudinal corrugations to the paper as it passes through the mechanism, whereby the paper is stiffened for travel through the associated machine. As shown, the mechanism comprises a corrugated roller 6, e.g. of metal or hard plastics material, which cooperates with a resilient roller 4, e.g. of rubber. Alternatively, both rollers may be corrugated.